(a) The volume of a certain liquid varies with temperature as

V = V′{0.75 + 3.9 × 10−4(T/K) + 1.48 × 10−6(T/K)2}

where V′ is its volume at 300 K. Calculate its expansion coefficient,α, at 320 K.

(b) The volume of a certain liquid varies with temperature as

V = V′{0.77 + 3.7 × 10−4(T/K) + 1.52 × 10−6(T/K)2}

where V′ is its volume at 298 K. Calculate its expansion coefficient,α, at 310 K